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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Use trace_analyzer::Query and trace_analyzer::TraceAnalyzer to search for | 5 // Use trace_analyzer::Query and trace_analyzer::TraceAnalyzer to search for |
6 // specific trace events that were generated by the trace_event.h API. | 6 // specific trace events that were generated by the trace_event.h API. |
7 // | 7 // |
8 // Basic procedure: | 8 // Basic procedure: |
9 // - Get trace events JSON string from base::trace_event::TraceLog. | 9 // - Get trace events JSON string from base::trace_event::TraceLog. |
10 // - Create TraceAnalyzer with JSON string. | 10 // - Create TraceAnalyzer with JSON string. |
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566 // TraceAnalyzer helps tests search for trace events. | 566 // TraceAnalyzer helps tests search for trace events. |
567 class TraceAnalyzer { | 567 class TraceAnalyzer { |
568 public: | 568 public: |
569 ~TraceAnalyzer(); | 569 ~TraceAnalyzer(); |
570 | 570 |
571 // Use trace events from JSON string generated by tracing API. | 571 // Use trace events from JSON string generated by tracing API. |
572 // Returns non-NULL if the JSON is successfully parsed. | 572 // Returns non-NULL if the JSON is successfully parsed. |
573 static TraceAnalyzer* Create(const std::string& json_events) | 573 static TraceAnalyzer* Create(const std::string& json_events) |
574 WARN_UNUSED_RESULT; | 574 WARN_UNUSED_RESULT; |
575 | 575 |
576 void SetIgnoreMetadataEvents(bool ignore) { ignore_metadata_events_ = true; } | 576 void SetIgnoreMetadataEvents(bool ignore) { |
| 577 ignore_metadata_events_ = ignore; |
| 578 } |
577 | 579 |
578 // Associate BEGIN and END events with each other. This allows Query(OTHER_*) | 580 // Associate BEGIN and END events with each other. This allows Query(OTHER_*) |
579 // to access the associated event and enables Query(EVENT_DURATION). | 581 // to access the associated event and enables Query(EVENT_DURATION). |
580 // An end event will match the most recent begin event with the same name, | 582 // An end event will match the most recent begin event with the same name, |
581 // category, process ID and thread ID. This matches what is shown in | 583 // category, process ID and thread ID. This matches what is shown in |
582 // about:tracing. After association, the BEGIN event will point to the | 584 // about:tracing. After association, the BEGIN event will point to the |
583 // matching END event, but the END event will not point to the BEGIN event. | 585 // matching END event, but the END event will not point to the BEGIN event. |
584 void AssociateBeginEndEvents(); | 586 void AssociateBeginEndEvents(); |
585 | 587 |
586 // Associate ASYNC_BEGIN, ASYNC_STEP and ASYNC_END events with each other. | 588 // Associate ASYNC_BEGIN, ASYNC_STEP and ASYNC_END events with each other. |
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706 | 708 |
707 // Count all matches. | 709 // Count all matches. |
708 static inline size_t CountMatches(const TraceEventVector& events, | 710 static inline size_t CountMatches(const TraceEventVector& events, |
709 const Query& query) { | 711 const Query& query) { |
710 return CountMatches(events, query, 0u, events.size()); | 712 return CountMatches(events, query, 0u, events.size()); |
711 } | 713 } |
712 | 714 |
713 } // namespace trace_analyzer | 715 } // namespace trace_analyzer |
714 | 716 |
715 #endif // BASE_TEST_TRACE_EVENT_ANALYZER_H_ | 717 #endif // BASE_TEST_TRACE_EVENT_ANALYZER_H_ |
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